摘要
为更好地研究石嘴山市寒潮天气环流形势及物理量特征,为寒潮预报服务提供参考,对2017年10月7—9日石嘴山市入秋以来首场寒潮及雨雪天气过程进行分析。利用地面气象观测资料、NCEP1°×1°再分析资料等,从天气学成因、物理量场等对该次寒潮过程进行分析。结果表明,高空蒙古低压、横槽转竖、强锋区、地面锋面气旋、冷高压等导致寒潮爆发,高空冷空气动量下传、近地层强冷平流对大风降温起到重要作用。
In order to better study the cold wave circulation situation and physical quantity characteristics of Shizuishan and provide reference for the cold wave prediction service,in this paper the first cold wave and rain-snow weather process in Shizuishan since the autumn of October 7 to 9,2017 was analyzed.Making use of the ground meteorological observation data,the NCEP 1°×1°reanalysis data,etc.,the process of the cold wave was analyzed from the weather causes and physical quantity field.The results show that high altitude Mongolian low pressure,vertical rotation of transverse trough,strong frontal area,surface cyclone,cold high pressure and so on lead to the cold wave outbreak.However,the momentum of cold air in the upper and the strong cold advection in the near stratum play an important role in the wind and cooling.
作者
李晓虹
周翠芳
姜浩
田凤
LI Xiaohong;ZHOU Cuifang;JIANG Hao;TIAN Feng(Key Laboratory for Meteorological Disaster Monitoring and Early Warning and Risk Management of Characteristic Agriculture in Arid Regions,CMA,Yinchuan 750000,China;Ningxia Key Lab of Meteorological Disaster Prevention and Reduction,Yinchuan 750000,China;Shizuishan Meteorological Observatory of Ningxia,Shizuishan 753000,China)
出处
《宁夏工程技术》
CAS
2019年第3期202-207,215,共7页
Ningxia Engineering Technology
关键词
寒潮
环流形势
物理量
the cold wave
circulation situation
physical quantity
